. >>> president obama nominating john kerry to be the next secretary of state. saying the massachusetts democrat won't need a lot of on-the-job training. he is chairman of the senate foreign relations committee and also ran for president in 2004. if confirmed the senator will succeed hillary clinton who is set step down next month. she missed today's announcement as she recovers from a concussion. i'm marianne rafferty. now, back to "the fox files." >>> we are here in grand central terminal in new york city. every day, 700,000 people pass through here which means that superdogs like holland have a very important job to do especially in a post 9/11 world. here is what it takes to become a four legged hero he. ♪ ♪ >> before they could do this, they all start out like this. fox files cameras got a first-hand look at the department of defense military working dog program at lackland air force base where puppies learn to become warriors. spread across nearly 9,000-acres in san antonio, texas, the base is home to the 341st training squadron. >> the purpose is to p